40242 ZIP Code, Louisville, KY
40242 is a ZIP code in Louisville, Kentucky in Jefferson County. It covers 2.9 square miles of land. The closest ZIP codes are 40222, 40241 and 40223. 11,168 people live here in 5,010 households. At about 3,905 people per square mile it has suburban density, and owners and renters are mixed (67% own). Median household income is $75,417, above the Kentucky median of $63,726.
Quick facts
- Mailing city: Louisville, KY
- County: Jefferson County
- Land area: 2.9 sq mi
- Population: 11,168
- Median household income: $75,417
- Carrier routes: 9 (4,906 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 11,168 |
| Households | 5,010 |
| Median household income | $75,417 |
| Income per person | $45,951 |
| Median age | 37.5 |
| Homeowners | 67.1% |
| Median home value | $299,600 |
| Median rent | $1,314 |
| Bachelor's degree or higher | 47.9% |
| Average commute (minutes) | 19.9 |
| Households with kids under 18 | 23.0% |
| Moved in the past year | 15.0% |
| Below the poverty line | 8.6% |
| Broadband internet | 93.3% |
| Speak a non-English language at home | 11.9% |
Household income
| % of households | Value |
|---|---|
| <$10K | 5.6% |
| $10–15K | 2.4% |
| $15–25K | 3.1% |
| $25–35K | 6.0% |
| $35–50K | 8.4% |
| $50–75K | 24.1% |
| $75–100K | 13.2% |
| $100–150K | 17.2% |
| $150–200K | 9.9% |
| $200K+ | 10.0% |
Age
| % of all residents | Value |
|---|---|
| <10 | 13.7% |
| 10–19 | 10.7% |
| 20–24 | 3.8% |
| 25–34 | 18.9% |
| 35–44 | 11.2% |
| 45–54 | 10.2% |
| 55–64 | 10.8% |
| 65–74 | 11.9% |
| 75+ | 8.9% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 41.4% |
| Owned outright | 24.6% |
| Rented | 31.6% |
| Vacant | 2.4% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 70.3% |
| Townhome | 6.4% |
| 2–4 units | 6.0% |
| 5–19 units | 13.5% |
| 20+ units | 3.8% |
| Mobile / other | 0.0% |
Businesses in 40242
127 business establishments with 1,361 employees (ZIP Codes Business Patterns 2023).
- Real Estate and Rental and Leasing: 19
- Professional, Scientific, and Technical Services: 18
- Retail Trade: 17
- Construction: 15
- Other Services (except Public Administration): 15
- Administrative and Support and Waste Management and Remediation Services: 10
- Health Care and Social Assistance: 9
- Information: 5
EDDM carrier routes
40242 has 9 USPS carrier routes with 4,906 residential and 114 business mailboxes. Open the EDDM route map.
Carrier routes in 40242
40242 has 9 USPS carrier routes (9 city (C)) with 4,906 residential and 114 business mailboxes. Routes range from 430 homes (C098) to 708 homes (C091); the median route has 534 homes. The Census counted 5,010 households in 40242 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 1 |
| 500–749 | 8 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 40242 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C056 — USPS business mailboxes 35, 525 homes
- Route C082 — USPS business mailboxes 32, 516 homes
- Route C087 — USPS business mailboxes 18, 545 homes
- Route C091 — USPS business mailboxes 10, 708 homes
- Route C094 — USPS business mailboxes 10, 594 homes
Select these 5 routes on the route map
Every carrier route in 40242
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C056 | City | 525 | 35 | $61,687 | — | — | — |
| C067 | City | 534 | 2 | $72,810 | — | — | — |
| C078 | City | 541 | 7 | $77,854 | — | — | — |
| C080 | City | 513 | 0 | $61,687 | — | — | — |
| C082 | City | 516 | 32 | $142,112 | — | — | — |
| C087 | City | 545 | 18 | $66,057 | — | — | — |
| C091 | City | 708 | 10 | $72,810 | — | — | — |
| C094 | City | 594 | 10 | $48,194 | — | — | — |
| C098 | City | 430 | 0 | $73,306 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 40242 on the EDDM route map.
How route demographics are estimated
Mailbox counts come from USPS; demographics are estimates
The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).
How a route gets its figures: the block-group length-share method
We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.
Margins of error
Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.
Different years
USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.
Why some routes show identical figures
Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.
Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Nearby ZIP codes
- 40222 — Louisville/Jefferson County metro government (balance), KY (1.6 mi)
- 40241 — Louisville/Jefferson County metro government (balance), KY (1.8 mi)
- 40223 — Louisville/Jefferson County metro government (balance), KY (2.8 mi)
- 40025 — Glenview city, KY (3.9 mi)
- 40207 — St. Matthews city, KY (3.9 mi)
- 40243 — Middletown city, KY (3.9 mi)
- 40041 — Louisville city, KY (4.4 mi)
- 40220 — Louisville/Jefferson County metro government (balance), KY (4.5 mi)
Areas that include 40242
- Louisville/Jefferson County metro government (balance), KY ZIP codes — 23 ZIP codes
- Lyndon, KY ZIP codes — 3 ZIP codes
- Barbourmeade, KY ZIP codes — 2 ZIP codes
- Plantation, KY ZIP codes — 1 ZIP code
- Rolling Hills, KY ZIP codes — 1 ZIP code
- Langdon Place, KY ZIP codes — 2 ZIP codes
- Meadow Vale, KY ZIP codes — 2 ZIP codes
- Murray Hill, KY ZIP codes — 2 ZIP codes
- Bancroft, KY ZIP codes — 2 ZIP codes
- Moorland, KY ZIP codes — 2 ZIP codes
- Westwood (Jefferson County), KY ZIP codes — 1 ZIP code
- Briarwood, KY ZIP codes — 1 ZIP code
- Old Brownsboro Place, KY ZIP codes — 2 ZIP codes
- Goose Creek, KY ZIP codes — 1 ZIP code
- Louisville, KY ZIP codes — 35 ZIP codes
- Jefferson County ZIP codes — 39 ZIP codes
- Kentucky ZIP code data
Where it ranks
Mail every home in 40242
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
Louisville EDDM mailing
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 40242, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 40242 in?
- 40242 is a Louisville, KY mailing address. By land area, 40% lies inside Lyndon, 14% lies inside Louisville/Jefferson County metro government (balance), 7% lies inside Plantation and 6% lies inside Rolling Hills.
- What county is 40242 in?
- 40242 is in Jefferson County.
- What is the population of 40242?
- About 11,168 people (±776), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 10,686.
- What is the median household income in 40242?
- $75,417 (±$5,502), compared with $63,726 for Kentucky as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 40242?
- 9 USPS carrier routes with 4,906 residential and 114 business mailboxes (5,020 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 40242?
- The closest, measured center to center: 40222 (1.6 mi, Louisville/Jefferson County metro government (balance), KY), 40241 (1.8 mi, Louisville/Jefferson County metro government (balance), KY), 40223 (2.8 mi, Louisville/Jefferson County metro government (balance), KY), 40025 (3.9 mi, Glenview), 40207 (3.9 mi, St. Matthews) and 40243 (3.9 mi, Middletown).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.